import com.sun.source.tree.Tree;

import java.util.LinkedList;
import java.util.Queue;

public class Test2 {
    class TreeNode{
        public int val;
        TreeNode left;
        TreeNode right;
    }
    public boolean isCompleteTree(TreeNode root) {
        if(root==null){
            return true;
        }
        Queue<TreeNode> qu=new LinkedList<>();
        TreeNode ret=new TreeNode();
        while(qu.isEmpty()){

        }
        return false;
    }
}
